| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Control Theory of Systems Governed by Partial Differential Equations | 978-0-12-068640-7 (0-12-068640-6) | 1977 |
| Mathematical Foundations of the Finite Element Method: With Applications to Partial Differential Equations | 978-0-12-068650-6 (0-12-068650-3) | 1973 |